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package com.orbekk.discovery;
import java.net.DatagramPacket;
import java.net.InetAddress;
import java.net.UnknownHostException;
import android.app.Service;
import android.content.Intent;
import android.os.Handler;
import android.os.IBinder;
import android.os.Message;
import android.widget.Toast;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.orbekk.same.ClientApp;
import com.orbekk.same.DiscoveryListener;
import com.orbekk.same.MasterApp;
import com.orbekk.same.NetworkNotificationListener;
import com.orbekk.same.SameController;
public class SameService extends Service {
final static int PORT = 15066;
private Logger logger = LoggerFactory.getLogger(getClass());
private Thread discoveryThread = null;
private SameController sameController = null;
public final class DiscoveryThread extends Thread {
Broadcaster broadcast;
DiscoveryListener listener;
public DiscoveryThread(DiscoveryListener listener) {
broadcast = new Broadcaster(SameService.this);
this.listener = listener;
}
@Override public void run() {
while (!Thread.interrupted()) {
DatagramPacket packet = broadcast.receiveBroadcast(PORT);
String content = new String(packet.getData(), 0, packet.getLength());
String[] words = content.split(" ");
if (!content.startsWith("Discover") || content.length() < 2) {
logger.warn("Invalid discovery message: {}", content);
continue;
}
String port = words[1];
String url = "http://" + packet.getAddress().getHostAddress() +
":" + port + "/ClientService.json";
listener.discover(url);
Message message = Message.obtain();
message.obj = "New client: " + url;
toastHandler.sendMessage(message);
}
}
@Override public void interrupt() {
super.interrupt();
broadcast.interrupt();
}
}
private Handler toastHandler = new Handler() {
@Override public void handleMessage(Message message) {
Toast.makeText(SameService.this,
(String)message.obj, Toast.LENGTH_SHORT)
.show();
logger.info("Display toast: {}", (String)message.obj);
}
};
private void createNetwork() {
if (discoveryThread == null) {
synchronized (this) {
discoveryThread = new DiscoveryThread(sameController.getClient());
discoveryThread.start();
}
}
}
private void sendBroadcastDiscovery(InetAddress ip) {
Broadcaster broadcaster = new Broadcaster(this);
String message = "Discover " + (PORT + 2);
byte[] data = message.getBytes();
if (ip.equals(broadcaster.getBroadcastAddress())) {
broadcaster.sendUdpData(data, ip, PORT);
} else {
String remoteAddress =
String.format("http://%s:%s/ClientService.json",
ip.getHostAddress(), PORT + 2);
sameController.getClient().sendDiscoveryRequest(
remoteAddress);
}
}
private void joinNetwork(InetAddress ip) {
sameController.getClient().setNetworkListener(
new NetworkNotificationListener() {
@Override
public void notifyNetwork(String networkName, String masterUrl) {
Message message = Message.obtain();
message.obj = "notifyNetwork(" + networkName + ", " +
masterUrl;
toastHandler.sendMessage(message);
}
});
sendBroadcastDiscovery(ip);
}
@Override
public IBinder onBind(Intent intent) {
return null;
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
System.setProperty("http.keepAlive", "false");
Toast.makeText(this, "service start: " + intent.getAction(),
Toast.LENGTH_SHORT).show();
if (sameController == null) {
sameController = SameController.create(PORT + 2);
try {
sameController.start();
String myIp = new Broadcaster(this).getWlanAddress()
.getHostAddress();
String myUrl = "http://" + myIp + ":" + (PORT + 2) + "/";
sameController.setUrl(myUrl);
} catch (Exception e) {
logger.error("Failed to start server", e);
return START_STICKY;
}
}
if (intent.getAction().equals("create")) {
createNetwork();
} else if (intent.getAction().equals("join")) {
try {
InetAddress ip = InetAddress.getByName(intent.getExtras().getString("ip"));
joinNetwork(ip);
} catch (UnknownHostException e) {
logger.error("Unknown host.", e);
}
}
return START_STICKY;
}
@Override
public void onDestroy() {
Toast.makeText(this, "service stopped", Toast.LENGTH_SHORT).show();
if (discoveryThread != null) {
discoveryThread.interrupt();
}
if (sameController != null) {
sameController.stop();
}
}
}
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